Portion of a shoe outsole



FIG. 1 is a plan view of a portion of a shoe outsole showing my new design;

FIG. 2 is a frontal view thereof; and,

FIG. 3 is a rear perspective view thereof;

The uneven broken line showing of the remainder of the shoe sole is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe outsole, as shown and described. 